Corrosion in Fertiliser and Petroleum Industry: Proceedings of Short Course on "Corrosion in Fertiliser and Petroleum Industry" Organised by the Corrosion Advisory Bureau at Udyogamandal from 20th to 24th December 1968K. N. P. Rao, A. K. Lahiri |
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Page 74
... Zinc Ltd. , Udyogamandal ) I do not have any practical experience in the use of aluminium anodes and to speak frankly I am not aware why the zinc anodes have been used instead of aluminium anodes . Dr. A. K. Lahiri ( Corrosion Advisory ...
... Zinc Ltd. , Udyogamandal ) I do not have any practical experience in the use of aluminium anodes and to speak frankly I am not aware why the zinc anodes have been used instead of aluminium anodes . Dr. A. K. Lahiri ( Corrosion Advisory ...
Page 137
... zinc . For the prevention of scale deposits 2 to 5 ppm are normally sufficient but the amounts required for corrosion protection vary from 3 to 150 ppm expressed as P2O5 . For use in cooling towers use of 15 to 37 ppm as P2O5 is most ...
... zinc . For the prevention of scale deposits 2 to 5 ppm are normally sufficient but the amounts required for corrosion protection vary from 3 to 150 ppm expressed as P2O5 . For use in cooling towers use of 15 to 37 ppm as P2O5 is most ...
Page 138
... zinc . 4 . - Chromate Soluble zinc organic . 5 . High phosphate types 6 . Glassy polyphosphate 7 . 8 . 9 . Chromate - phosphate mixture . Polyphosphate soluble zinc Phosphate - Organic Polyphosphate complex cyanide . 1 and 6 are open ...
... zinc . 4 . - Chromate Soluble zinc organic . 5 . High phosphate types 6 . Glassy polyphosphate 7 . 8 . 9 . Chromate - phosphate mixture . Polyphosphate soluble zinc Phosphate - Organic Polyphosphate complex cyanide . 1 and 6 are open ...
Contents
INTRODUCTION | 3 |
CHEMICAL CORROSION AND ITS PREVENTION | 13 |
CORROSION PROBLEMS IN THE MANUFACTURE OF NITROGEN BASED FERTILIZER | 27 |
9 other sections not shown
Common terms and phrases
addition alloys aluminium ammonia ammonium amount anodic application attack bottom carbon steel cast iron cathodic protection cause chemical chloride chromium coatings concentration construction containing cooling corrosion problems corrosion rate cracking crude developed distillation effective environment epoxy equipment exchangers failure fertiliser flow formation give given handling heat higher hydrogen hydrogen sulphide increase industry inhibitor iron lead material metal method mild steel Monel months natural observed occurred operating organic oxide oxygen paint petroleum phosphate pipe pitting plant plates potential practice presence pressure prevent pumps range reaction reduced refinery removal resistance rubber severe shell showing solution specially stainless steel steam storage tanks stress corrosion structure suitable sulphuric acid surface Table tanks temperature tests thickness tower treatment tubes unit various welding zinc